Power attachment for saw swages



Sept. 22, 1931. R. G. HORTON ET AL POWER ATTACHMENT FOR SAW SWAGES Filed Feb. 23, 1926 2 Sheets-Sheet 1 Sept. 22, 1931'. R. s. HORTON ET AL 1,824,349

POWER ATTACHMENT FOR SAW SWAGES Filed Feb. 23, 1926 2 Sheets-Sheet 2 I vslvroms fins 6/101? ro/v aka: f/PALEY b r W "a? 35?? equipped with an air compressing plantforf Patented Sept. 22, 1931 RAVE G. Honroit aim GEoneErnAtEtjoFritEsNo, .dnrronnnf: v

' rowee amcmtem Fons'Aw swnons j p Application filed rebmary gs, ieefifserialffib. 89,826.

Our invention relates-to saw swages and-:- particularly. to power attac'iiments therefor.

- Saw swages are commonly hand: operated vand While this practice is entirelysatisfae 1such-elernentpiuotally supportedon said tory on saws of lig'ht gauges, the band saws now used'in large mills arel/g of 'anineh or more thick, 16 incheswide' and 65 "feet or;

more long.

With saws of such sizes theswa'ging isatedious and laborious piece of work, further introducing inaccuracies due to fatigue of the operator; and tending to turn-out a saw not uniformly swaged.

Anti-friction bearings have been used in.

these manually operated swag'es and yari one other devices for reducing the energy re-- quired for operating 'therm butitstill re-' mained an unsatisfactory and "difficult piece 1 the'defects of manu alinoperative position;

of work, subject to all operation.

The principal object of our invention :is. to provide a portable power attachment for saw swages' capable of operating-the s aw? sWa-ge uniformly and accurately seas to 725i turn out a saw whose teeth are uniformly I g p supportingplate-is connected 'to the swage swaged to exactly the same degree; A further object ofjourinvention is to manually operated swage*,- by merely remov:

ing the operating lever and connecting attaclnnentin its' pla'ee. y a

At present all saw mills are commonly supplying compressed 'air Where needed about the mill, or with steam 'presjsureeither of Wh'ichcan supply the fluidjpressur'e re- With a saw swage of the character described of portable means for-applying mechanical power to the operating lever of the saw quired for operating I our: power attachment; However, We preferably uselcompr'essed air, as there is no radiationjo'f'heat norobjecy prisesa ca s'ing,14' having an opening 140! for sWage,- such me'anscompr ising a supporting plate adapted tote; mounted over the V teeth 1 of the saw to be swagedfandfirmly securedat-one end to the 'swage and apower element including a member projected and retracted=,--

other j s and advantages will appe fr hereinafterand, while "we have shown and will describe the preferred form ofburiin vention, we wish it understood that we do but that {various changes and? adaptations may be made therein without: departure from the spirit of our invention.

- In the drawingsf 'not'limit ourselves to such preferredforni,'-

Fig. 1 is a side eIeVatiOn ofour' device,

positioned for? useuponaz'band aw, in its.

'Fig; 2 is a top' plan ofjFig. I". Fig. 3 is" alfragmentary central section ofFigl' l. a i i Fig. 4' shows an enlarged fragmentary de' tailjofouri'device and illustrates howthe yerti'cal casing; I I

Fig. 4a show'saseetion taken on the line M -4a of Fig. 1 and illustrates the details of construction of the swage; I 5 Fig. 5 isan'. enlarged side elevation of arr-' other form of ourtdev ice. a 1

Fig. '6 is atopflp'lan of Fig.- 5. Fig.7 is aeentral vertic'al 'secti'on through Fig. I i Will describe our inyentionjas adapted I to be operated by compressed 'aiiggb fore mentioned; it -maybe operated by steam pressure rriinor adjustments of the valves or by cther mearrsw f} V Thefusu'al' saw" swage of this typefcorn receivingithe saw blade 'a'."O pposed clamping screws; 34a, 84b-arefthreadec1 intofei -ch side the casing and arrangedtdbear n eaeh side thesaw blade; the screw 34a-beifig operableby sun-operatinghandIeB-Q r The; 's'vc 'age" die 25 is err nged-transvers 1 in tlie easingl 14 so as to lie] in the throat of the tooth end-bear against the under side got longitudinal web on its upper surface,"

which slopes gradually from the .end on which the cylinder is pivoted and by which the plate is pivoted between lugs 1 5 and 16 fastened to the swage casing in any con? venient manner by a pin '17 and. spacersilS mounted over the pin-17; I

The under side of the plate-1O is provided with downwardly extending lugs or guides 32 and33 which hold theplatealinedwith the saw, the plate being adapted to rest on.

the top of the teeth in the usual manner.

The cylinder 20ris provided with a piston 21 fixed to a piston rod'22, which extends 25- out of'the cylinder through p ackingglands 26 and-27.

An operatinglever 24 pivoted to the end.

of the-rod 22ina yoke 23, and'the other end of the operating lever 24 is .fixed on the swage .die 25, the manual operating lever having been firstrem'oved.

An arm 40 is adjustably secured to the opposite side 'ofthe'housing 14 from the plate 10, by means of bolts 41 in slots 40a and projects along the saw blade and above it, Fig. 1. A forked member42 is carried by the said'arm which is arranged over the saw blade and a spring element 43 issecured to the said arm asat 43a and carries on its 5 other end a guide '44 resting on the teeth er the saw and between the forked. member 42 by which the swage die 25 is held in position during the swaging operation. {A conduit 28 is connected to eachend of the cylinder, Fig. 2, and'in its center is'pro-.

videda: four way valve 29. operatedby a lever 85. A fluid pressure supply pipe 30:

is connected to one of the ports of the valve and-theother portf opens-into the atmosphere. The valve is so arranged thatwhen fluid pressureisturned-into the conduit 28 in one direction, the'other half'of the conduit will'he} opened to the atmosphere.

To connect our powerattachment to the removed and the "operating -lever' 24 connected in its place. 'The plate 10 will be fastened to the swage casing 14, byth'e pin 17,. the plate beingsupported on the top of' the teeth'of the saw. 1

The swage-having been properly adjusted and clamped on -the saw bythe lever 34 and the operating 'lever beingfin' the full line position shown in-Fig. 1, and theepiston 21 in the far'endsof ,the. cylinder,jlthe valve 29.

will be turned so as to admit fluid pressure behind the piston, and force it vigorously forward, thus operating the swage die. S1-

'multaneously, the portion of the conduit connected to the forward end of the piston will be opened to the atmosphere through the four sway valve and the fluid held in front of. the piston will exhaust.

Atthe end of the stroke, which is shown in the lines in Fig. 1, the valve 29 will be reversed by the operator so that pressure will be admittedin front of the piston and allowed to exhaust from behind it, thus the swage will be returnedto its inoperative position and the swa ge' may be moved to the next tooth to be operated on.

It may be readily seen that each operation ofthe swage die will. be with exactly the sameforceand thus each tooth will be swaged to. exactly thesame' degree and that the number ofteeth swaged in the course of a day Will be materially increasedby the rapidity with which the swage maybe operated at a great savingiinoperating cost and without fatigue, to the workman.

In the form shown in Figs. 5 to 7 inclusive, our device is essentially the same as in the preferred form with the exception that fluid pressure is used to force the piston forward'only, a spring 36 being used to return the piston to its starting point, and a two way valve 37, one end of which is connected by a supply-pipe 38 to a source ofsupply, not shown, and the other end ofwhich is connected to atmosphere. 1

Fluid pressure operating means for the saw swage, are preferable because considered most-convenient,- however we do not limit our invention to such power means.v

Having describedour invention what we claimis: P r

1. A saw swage-comprising a supporting plateof substantial length provided atone of its endswithmeans for firmly mounting theplate over theteeth of a saw, a swage carried by the other end-of said plate in position for operatingupon the teeth of the saw, said swage providedwith an operating arm, fluid pressureoperated means pivotally secured to one end of the'plate and connected with said arm. the housingvof the swage provided on one; side; with means by which it-is-pivotally-connected to said plate and 1 an arm adjustablysecured to the opposite 'swage, the manualoperati-ng lever-will be side of the housing such arm extending parallel 'with the sawand at a Variable angle with the plane touched by the saw teeth.

2,'A saw swage comprising a supporting plate of substantial length provided at one of its ends with means for firmly mounting the plate over the teeth of a-sa-w, a swage carried by the'other end of said plate in position for operating upon the teeth of the saw, said swag-e provided with an operating arm, fiuidpressure {operated meanspivotally secured to one end of the plate and connected with said arm, the housingof the :plate of substantial length provided at one ofits ends with means for-firmly mounting the plate over the teeth of a saw, a swage carried by the other end of said plate in position for operating upon the teeth of the saw, said swage provided with anoperating arm, fluid pressure operated means pivotal- 'ly secured to one end of the plate and connected with said arm and an arm adjustably secured to the opposite side of the housing such arm extending parallel with the saw and at a variable angle with the plane touched by the saw teeth.

4. A saw swage'comprising a supporting plate of substantial length provided at one adjustable thereon-to permit the angular adjustment of the swage-head relatively to the desired-positionof the anvil thereof,the

free end of said arm provided with means for supporting the same on the saw blade and fluidpressure operating means mounted on said supporting arm and connectedwith said operating lever.

In witness that we claim the foregoing we have hereunto subscribed our names this 31st day of December, 1925.

RAE G.LHORTON.

GEORGE FRALEY.

of its ends with means for firmly mounting l Y the plate over the teeth of a saw, a swage carried by the other end of said plate in position for operating upon the teeth of the saw, said swage provided with an operating arm, fluid pressure operated means pivotally secured to one end of'the plate and connect-V I ed with said arm, and an arm adjustably secured to the opposite side of the housing such arm extending parallel with the saw and at a variable angle with the plane touched by the saw teeth, the extremity of such arm provided with means for firmly engaging the saw blade, wherebythe Open 7 ative relation of the die of the swage may,

be adjusted relatively to the teeth.

5. A power operated sawswage comprising a swage-head provided with an anvil, a

die, a die operating lever, and means for clamping the swage-head firmly on the saw blade to be operated upon, a supporting arm provided on said swage-head and radially adjustable thereon to permit the angular adjustment of the swage-head relatively to the desired position ofthe anvil thereof, the

free end of said arm provided with'means for supporting the same on the saw blade actuated operating means and power mounted on said supporting arm and connected with said operating lever. V

6. A power operated saw swage ompris ing, a swage-head provided with an anvil, a

die, a die operating lever, and means for clamping the swage-head firmly on the saw blade to be operated upon,-a supporting arm provided on said swage head and radially 

